.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "auto_examples/howto_preprocessing/plot_remeshing.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

    .. note::
        :class: sphx-glr-download-link-note

        :ref:`Go to the end <sphx_glr_download_auto_examples_howto_preprocessing_plot_remeshing.py>`
        to download the full example code.

.. rst-class:: sphx-glr-example-title

.. _sphx_glr_auto_examples_howto_preprocessing_plot_remeshing.py:


Remeshing with triangle elements
================================

.. sectionauthor:: Florian Zill (Helmholtz Centre for Environmental Research GmbH - UFZ)

This short example showcases the function `remesh_with_tri` which allows us to
take an existing mesh and re-discretize it with triangle elements. This is
useful for models, where the underlying meshing script is not available or hard
to adapt.

.. GENERATED FROM PYTHON SOURCE LINES 14-25

.. code-block:: Python



    from pathlib import Path
    from tempfile import mkdtemp

    import ogstools as ogs
    from ogstools import examples
    from ogstools.msh2vtu import msh2vtu

    mesh = examples.load_meshseries_THM_2D_PVD().mesh(1)








.. GENERATED FROM PYTHON SOURCE LINES 31-32

elements.

.. GENERATED FROM PYTHON SOURCE LINES 32-34

.. code-block:: Python

    fig = mesh.plot_contourf(ogs.variables.material_id)




.. image-sg:: /auto_examples/howto_preprocessing/images/sphx_glr_plot_remeshing_001.png
   :alt: plot remeshing
   :srcset: /auto_examples/howto_preprocessing/images/sphx_glr_plot_remeshing_001.png
   :class: sphx-glr-single-img





.. GENERATED FROM PYTHON SOURCE LINES 35-37

Here, we do the remeshing and use msh2vtu to convert the resulting msh file to
an OGS-compatible vtu file.

.. GENERATED FROM PYTHON SOURCE LINES 39-46

.. code-block:: Python

    mesh = examples.load_meshseries_THM_2D_PVD().mesh(1)
    temp_dir = Path(mkdtemp())
    msh_path = temp_dir / "tri_mesh.msh"
    ogs.meshlib.gmsh_meshing.remesh_with_triangle(mesh, msh_path)
    msh2vtu(msh_path, temp_dir, reindex=False, log_level="ERROR")
    mesh = ogs.Mesh(temp_dir / "tri_mesh_domain.vtu")
    fig = mesh.plot_contourf(ogs.variables.material_id)



.. image-sg:: /auto_examples/howto_preprocessing/images/sphx_glr_plot_remeshing_002.png
   :alt: plot remeshing
   :srcset: /auto_examples/howto_preprocessing/images/sphx_glr_plot_remeshing_002.png
   :class: sphx-glr-single-img






.. rst-class:: sphx-glr-timing

   **Total running time of the script:** (0 minutes 3.636 seconds)


.. _sphx_glr_download_auto_examples_howto_preprocessing_plot_remeshing.py:

.. only:: html

  .. container:: sphx-glr-footer sphx-glr-footer-example

    .. container:: sphx-glr-download sphx-glr-download-jupyter

      :download:`Download Jupyter notebook: plot_remeshing.ipynb <plot_remeshing.ipynb>`

    .. container:: sphx-glr-download sphx-glr-download-python

      :download:`Download Python source code: plot_remeshing.py <plot_remeshing.py>`

    .. container:: sphx-glr-download sphx-glr-download-zip

      :download:`Download zipped: plot_remeshing.zip <plot_remeshing.zip>`